Re: 4168 "XRAM" in place of 4364 SRAM

Date: Sat, 29 Jun 2013 08:38:50 +0200
Message-ID: <>
Hallo Patryk,

> Has anyone of you had some experience ....

Not at all, but I put one of my two brain cells in overgear. 

If the _RFSH line was meant to be connected to GND or +5V only, the 
designers could have done it inside the IC. IMHO it is meant to 
tell the IC it can do a refresh without fear that it will be 
accessed during that moment. If I was using it in a VIC-20 as RAM 
expansion, then I would connect it to PHI2, knowing that nothing 
will access it at the moment PH2 = (L).

Question out of curiousity: why using a 4168 and going through that 
much trouble?

Kind regards / Met vriendelijke groet, Ruud Baltissen

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Received on 2013-06-29 07:00:05

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